CN110021920A - Active harmonic elimination resistance device and resistance setting method - Google Patents
Active harmonic elimination resistance device and resistance setting method Download PDFInfo
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- CN110021920A CN110021920A CN201910236631.6A CN201910236631A CN110021920A CN 110021920 A CN110021920 A CN 110021920A CN 201910236631 A CN201910236631 A CN 201910236631A CN 110021920 A CN110021920 A CN 110021920A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
- H02H7/05—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers for capacitive voltage transformers, e.g. against resonant conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
Abstract
The present invention relates to power equipment harmonic elimination technical fields, it is a kind of active harmonic elimination resistance device and resistance setting method, the former includes PCB circuit board and the spaced resistance group of multistage, interval wiring forms PCB circuit board wiring region in PCB circuit board, every section of resistance group sequential and is fixed on PCB circuit board wiring region from the bottom to top, every section of resistance group is parallel with a relay on corresponding PCB circuit board wiring region, it is connected in series between the relay being connect with every section of resistance group, every section of resistance group includes being connected in parallel between multiple resistance and multiple resistance, resistance in every section of resistance group such as is at the resistance values etc..Structure of the invention is reasonable and compact, and resistor power, the resistance of the active harmonic elimination resistance group accessed by PCB circuit board are different with the quantity of paster type resistor, and realize harmonic elimination resistance automatically tracks adjustment.The change in resistance of resistance group is accessed by active accommodation, it is ensured that the safe and stable operation of power grid.
Description
Technical field
It is a kind of active harmonic elimination resistance device and resistance setting side the present invention relates to power equipment harmonic elimination technical field
Method.
Background technique
The resistance value and power selection of voltage transformer harmonic elimination resistance, involve open delta each winding power and
The voltage of open delta is related, and current microcomputer resonance eliminator is just because of being difficult to select the power and resistance value of harmonic elimination resistance, so adopting
Take passive type suppression measures --- the resistance short-term operation of resistance value very little is just put into after voltage transformer resonance, and it is dead to there is protection
Area cannot achieve active harmonic elimination, be difficult to automatically track adjustment in the setting of harmonic elimination resistance.
Summary of the invention
The present invention provides a kind of active harmonic elimination resistance device and resistance setting method, overcome the above-mentioned prior art it
Deficiency, can effectively solve existing microcomputer resonance eliminator cannot achieve active harmonic elimination, cannot carry out to the setting of harmonic elimination resistance
It automatically tracks and adjusts, lead to that harmonic elimination working efficiency is lower, there are problems that security risk.
Technical solution of the present invention first is that being realized by following measures: a kind of active harmonic elimination resistance device, packet
PCB circuit board and the spaced resistance group of multistage are included, interval, which is routed, in PCB circuit board forms PCB circuit board wiring region, and every section
Resistance group sequential and is fixed on PCB circuit board wiring region from the bottom to top, the corresponding PCB circuit board wiring of every section of resistance group
Qu Shangjun is parallel with a relay, is connected in series between the relay connecting with every section of resistance group, every section of resistance group
Including being connected in parallel between multiple resistance and multiple resistance, the resistance values such as the resistance in every section of resistance group is, in PCB circuit board
The input terminal of first segment resistance group be provided with the first open delta terminals of voltage transformer, in the latter end of PCB circuit board
The output end of resistance group is provided with the second open delta terminals of voltage transformer, PCB circuit board one end ground connection.
Here is further optimization or/and improvement of one of the above technical solutions of the invention:
Resistance described above is paster type resistor, and the back side of paster type resistor is pasted on PCB circuit board wiring region, PCB
The corresponding region that paster type resistor is pasted on wiring board is in Openworks shape.
Technical solution of the present invention second is that being realized by following measures: a kind of electricity of active harmonic elimination resistance device
Hinder setting method, comprising the following steps:
S1: by the output end of voltage transformer open delta respectively with the first open delta terminals of paragraph 1 resistance group
It is connected with n-th section of resistance group the second open delta terminals, i-th section of resistance group RiWith relay JiIt is connected in parallel, i-th section of resistance
Group RiWith (i-1)-th section of resistance group Ri-1It is directly connected to form series connection by wiring by PCB circuit board；
S2: U is setimThe maximum voltage being segmented for i-th section, UimCorresponding voltage mutual inductor open delta voltage is UΔ, voltage is mutual
The calculation formula of the voltage Umax of maximum phase in sensor open-triangular winding are as follows:
S3: K is set as voltage transformer excitation property voltage multiplication, S is every phase rated power of voltage transformer, then voltage
The calculation formula of the maximum maximum current mutually allowed are as follows:
S4: i-th section of resistance group R is calculatediResistance value, formula are as follows:
Then:
R∑iFor the sum of the resistance before i-th section:
Wherein, (1, i) k ∈；
S5: i-th section of resistance group R is calculatediPower, formula are as follows:
Here is further optimization or/and improvement of the technical scheme ii of the invention:
It is above-mentioned, further include S6: calculating the resistance quantity of each resistance group parallel connection and the process of every resistance:
(1) the power selection P of i-th section of paster type resistor is seti, maximum power operating factor δi, in i-th section of resistance group simultaneously
Join the quantity of resistance are as follows:
Mi=INT (Pi/δi) (7)
Wherein, INT is bracket function, i ∈ (1, n)；
(2) the resistance value R of every resistance in i-th section of resistance group is calculatedbi, formula are as follows:
Rbi=INT (RiMi) (8)
Wherein, INT is bracket function, MiFor the quantity of i-th section of parallel resistance, RiI-th section of resistance group resistance value.
Resistor power, resistance and the patch of its active harmonic elimination resistance group accessed by PCB circuit board of the present invention
The quantity of formula resistance is different, and realize harmonic elimination resistance automatically tracks adjustment.Become by the resistance value that active accommodation accesses resistance group
Change, it is ensured that the safe and stable operation of power grid.By making the corresponding PCB circuit board hollow out of paster type resistor, keep paster type resistor real
Heat dissipation is applied, the normal operation of paster type resistor is conducive to and extends the service life of paster type resistor.
Detailed description of the invention
Attached drawing 1 is the circuit connection diagram of the embodiment of the present invention 1.
Attached drawing 2 is the resistance setting procedure figure of the embodiment of the present invention 2.
Coding in attached drawing is respectively as follows: 1 for PCB circuit board, and R is resistance group, and R1 is first segment resistance group, and Ri is i-th section
Resistance group, Rn are n-th section of resistance group, and J is relay, and J1 is the first relay, and Ji is the i-th relay, and Jn is the n-th relay, H
For pad, L is PCB circuit board wiring region, and N is the first open delta terminals, and D is the second open delta terminals.
Specific embodiment
The present invention is not limited by the following examples, can determine according to the technique and scheme of the present invention with actual conditions specific
Embodiment.
Below with reference to examples and drawings, the invention will be further described:
Embodiment 1: as shown in Fig. 1, a kind of active harmonic elimination resistance device, including PCB circuit board and multistage interval are set
The resistance group R set, interval wiring forms PCB circuit board wiring region L in PCB circuit board, and every section of resistance group R is sequentially arranged from the bottom to top
Arrange and be fixed on the L of PCB circuit board wiring region, be parallel on the corresponding PCB circuit board wiring region every section of resistance group R one after
It is connected in series between electric appliance J, the relay J being connect with every section of resistance group R, every section of resistance group R includes multiple resistance
And it is connected in parallel between multiple resistance, the resistance values such as the resistance in every section of resistance group R is, in the first segment resistance of PCB circuit board
Group R1Input terminal be provided with the first open delta terminals N of voltage transformer, in the latter end resistance group R of PCB circuit board
Output end is provided with the second open delta terminals D of voltage transformer, PCB circuit board one end ground connection.
According to the needs of real work, each relay J can be welded on by welding to the wiring of PCB circuit board
Area is connected in series between the relay J connecting with every section of resistance group R by pad H, and each relay J is in PCB route
Weld on plate wiring region is pad H.
Resistance of the invention is powerful resistance, and above-mentioned relay J is for realizing voltage transformer and the relay
The disconnection or connection of the resistance group R of device J connection, in use, according to demand, the output voltage of the open delta of voltage transformer is
0 to 100V, it is therefore desirable to PCB circuit board is divided into n sections, is routed on every section, the fixed resistance group at every section of wire location, electricity
The output end of the open delta of mutual inductor is pressed to connect the first open delta terminals N and PCB line in PCB circuit board paragraph 1 respectively
Second open delta terminals D of n-th section of road plate.
If desired i-th section of resistance group RiAs active harmonic elimination resistance, then i-th section of resistance group RiBy MiResistor coupled in parallel obtains
?；I-th section of resistance group RiWith relay JiIt is connected in parallel, i-th section of resistance group RiWith (i-1)-th section of resistance group Ri-1By PCB circuit board
Wiring is directly connected to form series connection, i-th section of relay JiIt disconnects, then puts into this section of resistance group RiOperation；I-th section of relay JiIt closes
It closes, is then shorted this section of resistance group RiAnd it is out of service；(i-1)-th section of resistance group Ri-1Working operating mode similarly above content, no
It repeats again.
As shown in attached drawing 1,2, the resistance is paster type resistor, and the back side of paster type resistor is pasted onto PCB circuit board cloth
On line area L, the corresponding region that paster type resistor is pasted in PCB circuit board is in Openworks shape.
The corresponding PCB circuit board hollow out of above-mentioned paster type resistor facilitates paster type resistor operational process to radiate, is conducive to
The normal operation of paster type resistor and the service life for extending paster type resistor.
Embodiment 2: as shown in Fig. 2, a kind of resistance setting method of active harmonic elimination resistance device, including following step
It is rapid:
S1: by the output end of voltage transformer open delta respectively with the first open delta terminals of paragraph 1 resistance group
It is connected with n-th section of resistance group the second open delta terminals, i-th section of resistance group RiWith relay JiIt is connected in parallel, i-th section of resistance
Group RiWith (i-1)-th section of resistance group Ri-1It is directly connected to form series connection by wiring by PCB circuit board；
It is above-mentioned actual motion work when, i-th section of relay JiIt opens and puts into this section of resistance operation, i-th section of relay JiIt closes
Conjunction this section of resistance of short circuit is simultaneously out of service；
S2: U is setimThe maximum voltage being segmented for i-th section, UimCorresponding voltage mutual inductor open delta voltage is UΔ, voltage is mutual
The calculation formula of the voltage Umax of maximum phase in sensor open-triangular winding are as follows:
S3: K is set as voltage transformer excitation property voltage multiplication, S is every phase rated power of voltage transformer, then voltage
The calculation formula of the maximum maximum current mutually allowed are as follows:
S4: i-th section of resistance group R is calculatediResistance value, formula are as follows:
Then:
R∑iFor the sum of the resistance before i-th section:
Wherein, (1, i) k ∈；
S5: i-th section of resistance group R is calculatediPower, formula are as follows:
According to above-mentioned resistance setting method, if voltage transformer open delta voltage UΔIn U(i-1)mWith UimBetween when,
The relay J of i sections of resistance groups connectioniAnd the relay J of the resistance group connection before i-th section of resistance groupi-1…J1It opens, i-th section
Resistance group before resistance group and i-th section of resistance group puts into operation；The relay of resistance group connection after i-th section of resistance group
Ji+1、Ji+2…JnIt is closed, the resistance group after i-th section of resistance group is out of service.
As shown in Fig. 2, further include S6: calculating the resistance quantity of each resistance group R parallel connection and the process of every resistance:
(1) the power selection P of i-th section of paster type resistor is seti, maximum power operating factor δi, in i-th section of resistance group simultaneously
Join the quantity of resistance are as follows:
Mi=INT (Pi/δi) (7)
Wherein, INT is bracket function, i ∈ (1, n)；
(2) i-th section of resistance group R is calculatediIn every resistance resistance value Rbi, formula are as follows:
Rbi=INT (RiMi) (8)
Wherein, INT is bracket function, MiFor the quantity of i-th section of parallel resistance, RiI-th section of resistance group resistance value.
It is varied according to the power of paster type resistor, in i-th section of resistance group that different selection schemes is calculated
The quantity of parallel resistance is different.
Above-mentioned RbiIt can customize, also can choose the resistance close to the standard series for calculating resistance, being then reconfigured needs
The resistance quantity asked, the resistance value and power of resistance must be greater than the calculated value that above-mentioned formula is calculated.
Embodiment 3: as follows using the method that n sections of resistance groups are arranged in the active harmonic elimination resistance device of embodiment 1: according to 0
It is n sections that PCB circuit board, which is arranged, in~100V voltage, if then every section of resistance is identical: voltage transformer is standard by voltages segmentation is waited
Type, K=1.9, S=50VA；The voltage that paragraph 1 resistance component obtains: 0~10V；The voltage that 2nd section of resistance component obtains: 10V~
20V；The voltage that 3rd section of resistance component obtains: 20V~40V；The voltage that 4th section of resistance component obtains: 40V~60V；5th section of resistance group
The voltage got: 60V~80V；The voltage that 6th section of resistance component obtains: 80V~100V；
Paragraph 1: 0~10V calculates the quantity of the concatenated resistance of resistance group of needs and the resistance value of each resistance:
(1) resistance of paragraph 1 resistance group is calculated according to formula (4) and formula (5) are as follows:
R∑1=0；
(2) according to the power of formula (6) paragraph 1 resistance group are as follows:
(3) the maximum power operating factor δ of each paster type resistor is setiIt is 0.5, calculates paragraph 1 resistance according to formula (7)
Resistance quantity in parallel in group:
M1=INT (Pi/δi)=INT (25.9/0.5) ≈ 52；
(4) it is calculated according to formula formula (8) in resistance in parallel in paragraph 1 resistance group, the resistance value R of every resistanceb1Are as follows:
Rb1=INT (RiMi200 Ω of)=INT (52 × 3.86) ≈；
Therefore, according to the above-mentioned paragraph 1 resistance group that is calculated by the resistor coupled in parallel acquisition of 52 200 Ω.
Similarly calculate the resistance value and quantity of the 2nd section to 6 sections of resistance group:
2nd section of resistance group is obtained by the resistor coupled in parallel of 52 237 Ω；
3rd section of resistance group is obtained by the resistor coupled in parallel of 94 1057 Ω；
4th section of resistance group is obtained by the resistor coupled in parallel of 90 1270 Ω；
5th section of resistance group is obtained by the resistor coupled in parallel of 84 1430 Ω；
6th section of resistance group is obtained by the resistor coupled in parallel of 802 1580 Ω.
The above technical characteristic constitutes highly preferred embodiment of the present invention, with stronger adaptability and best implementation effect
Fruit can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
Claims (4)
1. a kind of active harmonic elimination resistance device, it is characterised in that: including PCB circuit board and the spaced resistance group of multistage,
Interval wiring forms PCB circuit board wiring region in PCB circuit board, and every section of resistance group sequential and is fixed on PCB from the bottom to top
On wiring board wiring region, every section of resistance group is parallel with a relay on corresponding PCB circuit board wiring region, with every section of resistance
It is connected in series between the relay of group connection, every section of resistance group includes in parallel between multiple resistance and multiple resistance connects
It connects, it is mutual to be provided with voltage in the input terminal of the first segment resistance group of PCB circuit board for the resistance values such as the resistance in every section of resistance group is
First open delta terminals of sensor are provided with the of voltage transformer in the output end of the latter end resistance group of PCB circuit board
Two open delta terminals, PCB circuit board one end ground connection.
2. active harmonic elimination resistance device according to claim 1, it is characterised in that: the resistance is paster type resistor,
The back side of paster type resistor is pasted on PCB circuit board wiring region, and the corresponding region of paster type resistor is pasted in PCB circuit board
It is in Openworks shape.
3. a kind of resistance setting method of active harmonic elimination resistance device as claimed in claim 2, it is characterised in that: including with
Lower step:
S1: by the output end of voltage transformer open delta respectively with the first open delta terminals of paragraph 1 resistance group and n-th
Section resistance group the second open delta terminals connection, i-th section of resistance group RiWith relay JiIt is connected in parallel, i-th section of resistance group RiWith
(i-1)-th section of resistance group Ri-1It is directly connected to form series connection by wiring by PCB circuit board；
S2: U is setimThe maximum voltage being segmented for i-th section, UimCorresponding voltage mutual inductor open delta voltage is UΔ, voltage transformer
The voltage U of maximum phase in open-triangular windingmaxCalculation formula are as follows:
S3: K is set as voltage transformer excitation property voltage multiplication, S is every phase rated power of voltage transformer, then voltage is maximum
The calculation formula of the maximum current mutually allowed are as follows:
S4: i-th section of resistance group R is calculatediResistance value, formula are as follows:
Then:
RΣiFor the sum of the resistance before i-th section:
Wherein, (1, i) k ∈；
S5: i-th section of resistance group R is calculatediPower, formula are as follows:
4. the resistance setting method of active harmonic elimination resistance device according to claim 3, it is characterised in that: further include
S6: the resistance quantity of each resistance group parallel connection and the process of every resistance are calculated:
(1) the power selection P of i-th section of paster type resistor is seti, maximum power operating factor δi, electricity in parallel in i-th section of resistance group
The quantity of resistance are as follows:
Mi=INT (Pi/δi) (7)
Wherein, INT is bracket function, i ∈ (1, n)；
(2) the resistance value R of every resistance in i-th section of resistance group is calculatedbi, formula are as follows:
Rbi=INT (RiMi) (8)
Wherein, INT is bracket function, MiFor the quantity of i-th section of parallel resistance, RiI-th section of resistance group resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236631.6A CN110021920B (en) | 2019-03-14 | 2019-03-14 | Active harmonic elimination resistor device and resistor setting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236631.6A CN110021920B (en) | 2019-03-14 | 2019-03-14 | Active harmonic elimination resistor device and resistor setting method |
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| Publication Number | Publication Date |
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| CN110021920A true CN110021920A (en) | 2019-07-16 |
| CN110021920B CN110021920B (en) | 2020-11-20 |
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| CN201910236631.6A Active CN110021920B (en) | 2019-03-14 | 2019-03-14 | Active harmonic elimination resistor device and resistor setting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115296263A (en) * | 2022-08-19 | 2022-11-04 | 云南电网有限责任公司曲靖供电局 | Voltage transformer ferromagnetic resonance elimination method of PID (proportion integration differentiation) regulated active matching resistor |
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|---|---|---|---|---|
| CN1449083A (en) * | 2002-03-11 | 2003-10-15 | 盈正豫顺电子股份有限公司 | Active harmonic wave suppressing device and control method |
| CN204333940U (en) * | 2014-11-26 | 2015-05-13 | 国家电网公司 | A kind of intelligence revises nonlinear resistance type resonance eliminator |
| WO2016136105A1 (en) * | 2015-02-27 | 2016-09-01 | 富士電機株式会社 | Resonance suppression device and resonance suppression method |
| CN106229946A (en) * | 2016-08-17 | 2016-12-14 | 云南电网有限责任公司电力科学研究院 | A kind of ferromagnetic resonance harmonic elimination apparatus and method |
| EP3316434A1 (en) * | 2016-10-25 | 2018-05-02 | Fuji Electric Co., Ltd. | Resonance suppression device |
-
2019
- 2019-03-14 CN CN201910236631.6A patent/CN110021920B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449083A (en) * | 2002-03-11 | 2003-10-15 | 盈正豫顺电子股份有限公司 | Active harmonic wave suppressing device and control method |
| CN204333940U (en) * | 2014-11-26 | 2015-05-13 | 国家电网公司 | A kind of intelligence revises nonlinear resistance type resonance eliminator |
| WO2016136105A1 (en) * | 2015-02-27 | 2016-09-01 | 富士電機株式会社 | Resonance suppression device and resonance suppression method |
| CN106229946A (en) * | 2016-08-17 | 2016-12-14 | 云南电网有限责任公司电力科学研究院 | A kind of ferromagnetic resonance harmonic elimination apparatus and method |
| EP3316434A1 (en) * | 2016-10-25 | 2018-05-02 | Fuji Electric Co., Ltd. | Resonance suppression device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115296263A (en) * | 2022-08-19 | 2022-11-04 | 云南电网有限责任公司曲靖供电局 | Voltage transformer ferromagnetic resonance elimination method of PID (proportion integration differentiation) regulated active matching resistor |
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| CN110021920B (en) | 2020-11-20 |
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